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Vishay General Semiconductor - Diodes Division SMBJ100CA-E3/5B
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- Part No.:
- SMBJ100CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CA-E3/5B.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,265
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Product details
Overview
SMBJ100CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection on signal and power lines. It features a 100 V standoff voltage (VWM), 111–123 V breakdown range (VBR at 1 mA), 162 V maximum clamping voltage (VC) at 3.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ100CA-E3/5B datasheet, SMBJ100CA-E3/5B pinout, SMBJ100CA-E3/5B application, or SMBJ100CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, JEDEC-compliant SMB package dimensions, and AEC-Q101-qualified alternatives for automotive-grade designs.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and low incremental surge resistance, enabling precise clamping during fast transients.
The device complies with ANSI/IEEE C62.35 standards and meets MSL Level 1 per J-STD-020 (peak reflow 260 °C). With RθJA = 100 °C/W and TJ(max) = +150 °C, it supports operation in high-temperature industrial environments when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 111 V / 123 V at 1 mA - Confirmed breakdown threshold range under standardized test conditions |
| VC @ IPPM | 162 V at 3.7 A - Clamped voltage during full 600 W transient event; defines worst-case protected node voltage |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validated for repetitive 0.01% duty cycle |
| IPPM | 3.7 A - Peak pulse current corresponding to VC; determines minimum series impedance needed for coordination |
| TJ(max) | +150 °C - Maximum junction temperature; sets thermal design margin for PCB copper area and ambient limits |
| Leakage @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient current entry point (either polarity) | Accepts surge current during positive or negative voltage excursion; connects to protected line |
| Cathode (Terminal 2) | Transient current return path (either polarity) | Completes low-impedance path to ground or reference rail; bidirectional symmetry eliminates orientation dependency |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against severe lightning-induced surges (IEC 61000-4-5 Level 4) without thermal runaway |
| 162 V clamping voltage at 3.7 A | Limits downstream IC stress to safe levels for 100 V-rated components such as RS-485 transceivers or DC-DC controllers |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with automated assembly at peak 260 °C |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift across temperature and humidity cycling |
| Bidirectional symmetry | Eliminates polarity concerns in AC-coupled or floating signal paths like Ethernet PHY interfaces or CAN bus stubs |
Applications
| Industrial Sensor Signal Lines | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting analog output (4–20 mA) and digital I/O lines of pressure/temperature sensors exposed to motor switching noise and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input or UART line. Use Value: Limits transient excursions to ≤162 V, preventing latch-up or gate oxide damage in precision front-end amplifiers and SAR ADCs. | Use Scenario: Safeguarding RJ-45 Ethernet PHY interface pins against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary line-side TVS on differential pairs (TX+/TX−, RX+/RX−), mounted adjacent to connector. Use Value: Maintains signal integrity below 100 MHz by limiting capacitance to <100 pF while clamping common-mode transients to safe levels. |
| Automotive Body Control Module (BCM) | AC-DC Power Supply Input Stage |
Use Scenario: Overvoltage suppression on LIN bus or switched 12 V supply rails in BCM modules subjected to load dump and jump-start events. IC Role / Device Role / Timing Role: Secondary protection device downstream of fuse and primary MOV, providing fast-response clamping for semiconductor-level immunity. Use Value: Survives 12 V system load dump pulses (ISO 7637-2 Pulse 5a) with <1 ns response time and no degradation after 1000+ surges. | Use Scenario: Input-stage transient suppression on offline SMPS front ends where rectified AC line surges threaten bridge rectifier and PFC controller. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor input, coordinated with NTC thermistor and X/Y capacitors. Use Value: Absorbs 600 W short-duration spikes without thermal runaway, reducing need for oversized MOVs and improving long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No functional difference; selected where halogen-free compliance is mandated in final product certification | Direct material substitution when environmental compliance requirements exceed standard RoHS |
| SMBJ100CAHE3_B/I | AEC-Q101 qualified version; same VWM, VBR, VC, and PPPM, but validated for automotive temperature cycling and lifetime testing | Required for under-hood or body electronics where automotive qualification is mandatory | Preferred for automotive OEM programs needing PPAP documentation and failure mode traceability |
Compared with SMBJ100CA-E3/5B, the M3/5B offers identical protection performance with halogen-free construction, while the HE3_B/I adds AEC-Q101 validation for automotive use - neither requires PCB layout changes, but qualification scope and material declarations differ.
Availability
SMBJ100CA-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and AC-DC power supply input stages requiring stable component supply, consistent parametric performance, and full traceability through Vishay's commercial-grade production line.
Supply support for SMBJ100CA-E3/5B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh electromagnetic environments - targeting industrial automation, telecom infrastructure, and automotive subsystems.
FAQ
What is the clamping voltage of SMBJ100CA-E3/5B at its rated peak pulse current?
The SMBJ100CA-E3/5B has a maximum clamping voltage (VC) of 162 V at its specified peak pulse current (IPPM) of 3.7 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-power transient event and is critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ100CA-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ100CA-E3/5B suitable for automotive applications?
The SMBJ100CA-E3/5B is a commercial-grade, RoHS-compliant TVS diode and is not AEC-Q101 qualified. For automotive use, Vishay offers the SMBJ100CAHE3_B/I variant, which undergoes rigorous automotive qualification testing including temperature cycling, humidity bias, and lifetime surge endurance. While SMBJ100CA-E3/5B may function electrically in benign automotive environments, SMBJ100CA-E3/5B does not meet OEM requirements for under-hood or safety-critical modules.
How does the bidirectional nature of SMBJ100CA-E3/5B affect PCB layout?
The SMBJ100CA-E3/5B has no polarity marking and exhibits identical electrical characteristics in both directions, so PCB layout requires no orientation alignment - either terminal can connect to the protected line or ground/reference rail. This simplifies placement in AC-coupled or floating systems like RS-485, CAN, or Ethernet PHY interfaces. The SMBJ100CA-E3/5B's symmetrical structure eliminates risk of reverse installation and reduces assembly errors in high-volume manufacturing.
What is the thermal resistance of SMBJ100CA-E3/5B, and how does it impact power dissipation?
The SMBJ100CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means a 5.0 W steady-state power dissipation would raise the junction temperature by 500 °C above ambient - far exceeding its 150 °C maximum rating. Therefore, SMBJ100CA-E3/5B is intended only for transient (not continuous) power handling; its 5.0 W rating applies only at TA = 50 °C with infinite heatsink assumptions, not real-world PCB layouts.
Can SMBJ100CA-E3/5B replace unidirectional TVS diodes like SMBJ100A-E3/5B in existing designs?
No - SMBJ100CA-E3/5B is bidirectional and lacks cathode band marking, while SMBJ100A-E3/5B is unidirectional with defined polarity and different leakage behavior (e.g., forward conduction at ~3.5 V). Substituting SMBJ100CA-E3/5B for SMBJ100A-E3/5B in DC-biased circuits may cause unintended conduction or fail to clamp correctly during negative transients. The SMBJ100CA-E3/5B must be used only where true bidirectional protection is required and circuit topology supports symmetrical clamping.
SMBJ100CA-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ100CA-E3/5B FAQ
1.How can I place an order for SMBJ100CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CA-E3/5B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ100CA-E3/5B reliable?
The price and inventory of SMBJ100CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ100CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CA-E3/5B?
SMBJ100CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CA-E3/5B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ100CA-E3/5B?
For technical support, including SMBJ100CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ100CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ100CA-E3/5B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ100CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ100CA-E3/5B?
All SMBJ100CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CA-E3/5B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ100CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ100CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CA-E3/5B Tags
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